Periscope



J. GRAWFQ PERIscoPE Filed July 11, 1911 E Smets-Smm 1y David 1,E1'awfnrdBY MAM ATTORNEYS "met omiten niet@ i Miers.

einem i n, len, eer engineer l (ci te) intention tieecriliee herein mayloe memuiiteiltreti neri 'itileel low' or lor the Government forgliotierntoentel perennes, without the 'peyment to lite oi" onlyintroiti' thereon.

lfllin intention loerteine to optical devices.

liliiore nnl'ticnlerliv it neintee to e, neriecope which ontrirnneeo eenbe opel-eten more lien comme@ with. optical devices i enel. piorideeelt-contained ineens o in lining un with temete. lili oiogieet oi"intention is to provisie e perifiicooe trillen etten en observer n broodielrl oivv tieion .noci permite elmost simultaneous determii notion oi'tile elleent oi n @nu with n tei-get.

li iortiieii olcieet is to provide e :se with rniiwtinn to einen loeremoved reeclily when linnn-eel im projectiles.'

millier' oloieetn enti nelvnntee'ee will he nprent irollli iollowing`iieinileel description, in which:

i 1W iii-...twee

t le n. eection on the line ii--ii oi Fie. l,

miei

il ie onction on tile line t-i ol li'lg. 1 tiiowinli tleteils oiconstruction.

.iiecor `l i to n nreierrerl embodiment, the nerieoone in composed oi n.contoiner-like body portion i to willen denoonnteicle end neeemblies iond l nre connecten. Tile end assemblies@ nml t lionne time windows; iienel ii end eine the reectim,V mirror-.e eind l. (See Fie. il.) l? moyeninioreei in lien el the ii/indotte enel mirrors. "lite mirrors ii onei nre positioned in the contentionnl mnnner to direct n rey of light(shown iw n tici-Minelli line in Fles. 2 enel il through tile iiotltiportion i ci' the periscope. The Winriottro mirrors ere ol?sufeient'length to give wl lielol oi View to on observer stationed ed-;ineent window ii. lower end ci the mrscope t @i im. miniem Ameli it,192%; 3l@

n e; ieee. om o. c. itil` Ac shown in Fig. 3, the narrow ends of thenngulnrly disposed mirror i reatin recesses il in blocks il of plasticor other materiel. The itindow ii ie held similarly in position. .Ametallic ill-eme it with openings 'slightly smeller than the window innd mirror t engage the'lglnss edges nucl completes the frame-structureof the end member i. Screw fasteners io enchor the blocks tito the metaltreme it. Rubber or other geslcet meteriol iii'is employed toprovide e.resilient v end o Hindi-.ight mmmtine between the glass and other framemembers.

mei nssemluly t is constructed similarly to nsemxbly i. lt :linerschieily in that e metallic bec plete-ll covers the entire `renr eren ofthe mirror so thct none oi' that portion is enpoeed. This eliminatesmuch of the danger oi' n recoit oi inadvertent handling. A

die t is hinged to end assembly t by brackets t no previously mentioned.

Fie. t lliustrntee the menner the end bly l engeees the body portion' ici the periscope.

'Short here ii nre fastened to theblocks il of the Y end nesembly l bysuitable means euch as screws it; On opposite sides oi e. bnr iii arechels lli. @uccidere il on the siclee oi non i engage the channels itend ifo e treclrweo' permitting sliding egement between 'the box i ondthe end assembly i. Shoulders li on the bnr il prevent Verticaldisengoeement of the body i end the reector ein i.

me. 5 @neces through the side wells of the neriline ti lrnnelle iiisuspended from euiteble brackets to :iocilitete removnl oi tilenerlscope from en ernfloreci journal (not chown).

elimini in 3 telescope iii is mounted. eiriineteioly enel reeilientlrtriti'lin tire lnody'i on e, eine rrnll ii. lire teleocope ner se ondthe edilletment tentures iorm no port ci the present intention endl willnot ice described.

The reecting member-fi is e. simple 'inline structure with. e frengiblewindowi ond mirror t. .e projectile y strike one or both end chetterthem so es to render them useless. The eliciine' t between the endmember l and the periecope body i enables the reecting member l to berepleced with o. minimum of eort end lose of time, thuis promoting theemcency of the ermoreel contriven from e. military standpoint. The openconstruction to the real' of einen mirror t exposes little metal to thepeth ol en enemy projectileyond eectively reducen `the ultime disruptionend distortion of metal mem.

`Such distortion would. prevent easy withdrawal of the oeriscope fromits ennui-ed mounting (not "l wire (not shown).

A screw it chown in mmol hie even neuf the rihbhund side oi the lowerwindow t `will observe the image oi the cross-wire at it. (See lille.l.)

The telescope ocsemblv may be witnciruurn by greening the lrnurleci @ripill shown in Fie, l und pulling it to the rient. This then permite themirror eeeembllec t and 3 to be sepureteol from the periocope body I. Byremovine the ecrewe iiil these end members ii end il con slide out oi.engagement with the body l.

The operution of the perlscope 'w es follows: c of le motioned with hicover. upm-oinmotell ein inchee from the lower window The uopreoiubiewidth of the perisoope enables him to view conveniently u. 1eme peut ofthe horizon. Upon www i e target through the perieoope proper, it willbe nemen? to line ugo the gun with the tureet prepuratory to firing'.Toe telem @cope employed ie collimoted with the br ruitubie which doesnot; constitute e pert ot this invention. The periscope and een ere romatou simultaneously until the image ci the teruet folle on the reticuleoi the teleccope. Tino lndicutee the proper nim lies been teiten und thetum muy be clleehureecl eo met its projectile will the tureet.

The perlompe enublee tile operator to sceau the normen until u tereet isnoticed. imi clos-ine the left eye end obeervine with the right ereuntil the teruel', felle on the crocewire, the operutor will be able totrein his @un quickly on thet ter 4eet with no chungo in his position.Thus the perieoope with ite selfconteined teleccone occomplisloec edouble purpose.

l cluirn:

l. In e. wide ongle perisoope, e. teleeeoue mounted therein, end o,reticolo in seid teleocoue for Sighting; on e, tureet, seid perisoopeond telescope arranged for simultaneous use by on. cire eserver inecunnine the horizon enel ou object to be pointed.

2. ln colnbinotion, u panoramic periecone,

telescope ucljustebly mounted therein for col Limoilou with the eine ofel nun, curl e @reticolo in seid telf-,econo to fucilitete lining up e.

3. im optical device comprising, e. wide unle perincope bovine u eineleviewing aperture und e single sighting aperture, und o. teleoope hevinge. relatively limited field of Vision operutively associated with thelight system of :seid periscope und including e reticule to facilitateaiming e,

from.

i. In en optical device, e. panoramic perieoope for unobstructedscanning of the horizon, u tele scope havin@ u limited iielci of visionoperutively ueecceted with und et one eide of the lient. oye teni of theperiscoue for commuting with u; mm und having el reticuie for eight-,ineon o. target, seid neriscope and telescope edupterl for metenteneoueuse.

S5. im optienii device comprising, o, wide ongle mariecope for observingthe horizon, u teleecono bovine e, reletively limited ileld oi' violonoptical.

ly eeeocieted with the light system of the periecope at one side oi theperis'cope, end u reticule in eolici telescope for sighting on e.turget, cold neriscope and telescope adapted for simultuneoue uae by unobserver.

(i. ln coxnbmetion, e. panoramic periscope, and u single power telescopetherein having o creesu wire for sighting on e target. Suid perircopeund telescope arranged for eimuituneouc ufie liv un observer.

7. ln combination, a. panoramic periscope inn cluciing e puir of spacedreflectors, o, teleec'ope :icliustcbly mounted between seid reflectorsend in the optical path thereof, und e. reticule in seid telescope forsighting; on u target.

In combination. e. periscope l'xnving e. pair of :spaced reiiectors forsurveying u broad horizon. telescope between seid reflectors in theoptico! metil to one side thereof, end e. reticule in eeici teleecopefor sighting on on object.

ii. lu un optical device, o. panoramic periscooe having o. peli' ofspaced reiectore, o telescope having e. relatively narrow field ofvision adjusteblv mounted between said reflectors in their light publiand et one side thereof, end e. reticule in :seid telescope for sightingon e teret.

' DAVE) J. CRAWFORD.

